CN201173100Y

CN201173100Y - Electric jar

Info

Publication number: CN201173100Y
Application number: CNU2007200326482U
Authority: CN
Inventors: 阮荆洲
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-09-04
Filing date: 2007-09-04
Publication date: 2008-12-31
Anticipated expiration: 2017-09-04

Abstract

The utility model discloses an electric bumper jar, which relates to a down-hole measurement jam releasing device in the petroleum engineering well logging. The electric jar bumper comprises a power function body and a jarring function body and is characterized in that the jarring function body comprises a spring blocking body, a spring pull rod, an energy-stored spring and a jump bit; the power function body comprises a motor reducer, an intermediate connector, a ball screw, a ball nut and a hanging gear sleeve; the motor reducer is fixedly connected with the intermediate connector, the ball screw is limited and installed axially in the intermediate connector, the ball nut is isolated from a circumference locating sleeve through a deep groove ball bearing, a torsion spring is arranged between the hanging gear sleeve and the circumference locating sleeve, the hanging gear sleeve and the ball nut are connected into a whole body, and the outer diameter of the ball nut is connected with a releasing gear sleeve; the jarring function body and the power function body are inserted and butt jointed through the way that the left end of the spring blocking body is corresponding to the right end of the intermediate connector. The electric jar bumper of the utility model can be connected in series during well logging, and when the instrument is jammed, the bumper jar can be started through the power-on to the motor from the ground to release the jam.

Description

Electronic bumper jar

Affiliated technical field

The utility model relates in the petroleum works well loggings a kind of down-hole with surveying release device.

Background technology

In the petroleum works open-hole logging is produced,, often there is downhole instrument in the well logging process, to meet the card incident and takes place because of many-sided reasons such as stratum, drilling well production and logger structures.Downhole instrument is in case chance is blocked, and remove instrument is not an easy thing by the card state.Instrument is met the common solution in card back at present has: cable promotes unfreezing by force, the unfreezing of drilling rod bypass, cable punching unfreezing.In above several releasing methods, cable promotes unfreezing by force and exists the cable danger of snapping, should forbid strictly speaking coming unfreezing with this kind mode, bypass unfreezing and punching are separated calorie requirement drilling crew and are cooperated and finish, labour intensity is big, and the engineering time is long, particularly the most frequently used now punching unfreezing, must log well the interrupt spot after having salvaged instrument, behind maintenance with good conditionsi place reparation cable, could continue well logging.

Along with people now require to improve day by day to the well logging timeliness, the unfreezing mode of both at home and abroad instrument being met card is studied and is salvaged unfreezing by original drilling well and be improved to the logger unfreezing of " saving oneself ", just when instrument is met card by the active force of logger device self break away from instrument by the card state.Produce the mature technology that unfreezing is carried out in jarring by impacting when using for reference the drilling well bit freezing, in the logging technique field, everybody relatively admits and discharges the back by spring energy-storage and give by card instrument one downward impact force, by becoming flexible of producing after the impact jarring with break away from instrument by the card state to bottom offset.The existing both at home and abroad cable bumper jar with cable lifting energy storage began to equip the test example that logger is implemented unfreezing in nearly 2 years.To be cable articulate by head harness and lifting arm and bumper jar jarring energy-stored spring its basic structure of cable bumper jar, the spring of precompressed one high rigidity between lifting arm and bumper jar shell, its purposes one is in order to guarantee the connection rigidity of steel wire cable and downhole instrument string, be unlikely to the well logging distance of zero mark is exerted an influence, the 2nd, make the lifting arm playback and free the effect of jarring spring Draw bar lock, in addition, the lifting arm of bumper jar partly also must have pressure equaliser, and freeing latching segment also must have the hydraulic pressure time-delay mechanism.The upper end must be equipped with down-hole tension force instrument when the cable bumper jar used, and ground winch operator promotes according to down-hole tension force or loosens the cable operated bumper jar.Because the cable bumper jar only could not start when instrument head harness is topmost blocked, start pulling force and aggravate instrument and pit shaft folder contract state again, need accurate down-hole tension force instrument to cooperate, and instrument is long, the cost height is to the articulating property of instrument, regular maintenance, ground winch operator technical quality all proposes very high requirement, also has very big difficulty so apply.

Summary of the invention

For the method that makes jarring releasing can obtain practical popularizing, the utility model has designed a kind of electronic bumper jar that comes the energy storage jarring by motor.Whole bumper jar can produce the active force identical with the cable bumper jar, possesses the tension force of having or not instrument again and all can use.

For reaching above purpose, the technical solution adopted in the utility model is: a kind of electronic bumper jar, comprise power function body and jarring functive, it is characterized in that: described jarring functive comprises jump bit, energy-stored spring, spring pull bar and the spring block body that docks with it, and described power function body comprises motor reducer, center tap, ball-screw, ball nut and articulates the tooth cover; Motor reducer and center tap are fastenedly connected, ball-screw axially is installed in the center tap, ball nut is isolated by a deep groove ball bearing and a circumference orienting cover, articulate between tooth cover and the circumference orienting cover and be equipped with a torsionspring, articulate tooth cover and be connected in aggregatesly with ball nut, the tooth cover is freed in one of ball nut external diameter connection; Described jarring functive is inserted butt joint with the power function body by the corresponding center tap right-hand member of spring block body left end.

The electronic bumper jar of said structure when motor rotates ball nut relatively leading screw move around and can be the time reverse with respect to the directed interplanting certain angle of circumference as outer torsional interaction.Center tap, spring block body and spring pull bar are inlayed mutually at circumferencial direction, can make like this articulating tooth cover tooth center and spring pull bar stay column under the effect of torsion spring to be centered close on the same circle center line.When outer torsional interaction, articulating tooth will stagger to disengaging with the spring tension post, so just can be easily reverses by circumference and realizes that spring energy-storage articulates and breaks away from.Adjust limit switch according to the spring impact stroke, terrestrial operation person is as long as keep supplying specified forward and reverse voltage to motor during the operation bumper jar, and bumper jar will be finished jarring work automatically.

Electronic bumper jar of the present utility model had both made in same operation the jarring force suitable with the cable bumper jar in the cycle, it is low to have cost again, and articulating property good (not needing down-hole tension force instrument) is easy to operate, the daily characteristics that need not safeguard.With respect to cable bumper jar length and weight only be its 1/3rd.In addition, electronic bumper jar spring energy-storage process can under any circumstance start jarring to not had outer active force by the card instrument, and this, is perhaps just being blocked or microcaloire just starts jarring releasing and can produce positive effect by the card instrument protection.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the main body vertical profile constructional drawing of an embodiment of electronic bumper jar.

Fig. 2 is the A-A sectional view of Fig. 1.

Fig. 3 is the B-B sectional view of Fig. 1.

Fig. 4 is the C direction view of Fig. 1.

Among Fig. 1: 1. motor reducer, 2. go up containment vessel, 3. center tap; 4. ball-screw, 5. ball nut is 6. freed the tooth cover; 7. zanjon bearing, 8. circumference orienting cover, 9. spring block body; 10. pulling force post, 11. spring pull bars, 12. energy-stored springs; 13. main protection shell; 14. jump bit, 15. torsionsprings, 16. articulate the tooth cover.

The specific embodiment

In the embodiment shown in fig. 1, by screw motor reducer (1) and center tap (3) left end are fastenedly connected, ball-screw (4) is located and be installed in center tap (3) inside by thrust bearing and angular contact bearing, can make full use of center tap (3) volume inside like this.Circumference orienting cover (8) is installed on ball nut (5) external diameter by bearing (7) isolation.Ball nut (5) external diameter left end connects by sunk screw frees tooth cover (6), articulates tooth cover (16) and is connected in aggregates by screw thread with ball nut (5).Articulate between tooth cover (16) and the circumference orienting cover (8) and adorn torsionspring (15).Circumference orienting cover (8) has projection always, by this straight projection circumference orienting cover (8) is located in a circumferential direction, another effect of straight projection is exactly on it gag lever post to be installed, the impulse stroke of ball nut (5) via hole by center tap (3) inner arm can be delivered on the pawl type skeleton of center tap (3) left end, be convenient to limit switch and install and adjust.As shown in Figure 2, the right-hand member circumferencial direction processing of center tap (3) is divided into the four paws shape and certain length is axially being arranged, and spring block body (9) is processed into the four paws shape of circumferencial direction and center tap (3) right-hand member complementation and is used for circumference orienting cover (8) at a certain pawl center processing guiding straight trough except that right-hand member.As shown in Figure 3, spring pull bar (11) left end also is processed into the structure the same with the center tap right-hand member but size is slightly little, spring pull bar (11) can go up be slided at spring block body (9) but can not rotate.As shown in Figure 4, the tooth right-hand member that articulates that articulates tooth cover (16) is processed into the inclined-plane, articulates after reversing and cross pulling force post (10) when tooth is run into pulling force post (10) articulating like this; Equally, the tooth of freeing of freeing tooth cover (6) also is processed into the inclined-plane, and the right-hand member pawl of center tap (3) is processed into helicoid, frees tooth cover (6) like this when setting stroke and drives and articulate tooth cover (16) and reverse and make spring pull bar (11) free release.Motor reducer (1), ball-screw (4), ball nut (5) etc. are connected the back and form a transmission agency body with center tap (3); and spring block body (9), spring pull bar (11), energy-stored spring (12), jump bit (13) etc. are formed a jarring functive, two integral body are inserted butt joint by the corresponding center tap right-hand member of spring block body left end refill the protection of instrumentation shell and just can finish the main body of whole bumper jar and assemble.After adjusting spacing stroke, keep supplying positive rated voltage only need for during terrestrial operation the motor cable core, supply current returns zero (articulate this moment tooth cover (16) finished with spring pull bar (11) articulate) after about twenties seconds, the cable core voltage reversal of will powering again, (energy-stored spring this moment (12) is pulled to the setting stroke and is released) stops power supply when electric current returns zero, and a jarring operation is finished.

The utility model is made the jarring energy-storage travelling wave tube with the high energy spiral compression spring; With efficient direct current motor (band reducer), ball-screw, ball nut as the spring energy-storage actuating unit; Utilize ball-screw nut harmonic motion friction square characteristic, be equipped with torsionspring, the circumference orienting cover, composition spring energy-storage transmission of power such as bearing articulate and release unit.The specific design technical data is: 1. jarring spring impulse stroke is 0～80mm, relevant work compressive force 0～6800N (being equivalent to 0～700 kilogram); 2. under specified 115V DC voltage, the motor reducer output speed should be more than or equal to 55r/min, and the output torque is 10N.m greatly; 3. a jarring operation cycle should be less than 60 seconds.

Claims

1, a kind of electronic bumper jar, comprise power function body and jarring functive, it is characterized in that: described jarring functive comprises jump bit, energy-stored spring, spring pull bar and the spring block body that docks with it, and an end of spring pull bar and spring block body joint is provided with the pulling force post; Described power function body comprises motor reducer, center tap, ball-screw, ball nut and articulates the tooth cover; Motor reducer and center tap are fastenedly connected, ball-screw axially is installed in the center tap, ball nut is isolated by a deep groove ball bearing and a circumference orienting cover, articulate between tooth cover and the circumference orienting cover and be equipped with a torsionspring, articulate tooth cover and be connected in aggregatesly with ball nut, the tooth cover is freed in one of ball nut external diameter connection; Described jarring functive is inserted butt joint with the power function body by the corresponding center tap right-hand member of spring block body left end.

2, electronic bumper jar according to claim 1 is characterized in that: described center tap and spring block body butted part are inlayed mutually at circumferencial direction.

3. electronic bumper jar according to claim 1 is characterized in that: described spring pull bar and spring block body butted part are inlayed mutually at circumferencial direction.

4, according to the arbitrary described electronic bumper jar of claim 1 to 3, it is characterized in that: articulating tooth cover right-hand member, it articulates tooth and is processed into the inclined-plane; Freeing tooth cover left end, it is freed tooth and also is processed into the inclined-plane.